US3175709A - Cross equalizing suspension for shuttle car wheels - Google Patents

Cross equalizing suspension for shuttle car wheels Download PDF

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Publication number
US3175709A
US3175709A US681007A US68100757A US3175709A US 3175709 A US3175709 A US 3175709A US 681007 A US681007 A US 681007A US 68100757 A US68100757 A US 68100757A US 3175709 A US3175709 A US 3175709A
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United States
Prior art keywords
wheels
vehicle
suspension
pivoted
links
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Expired - Lifetime
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US681007A
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English (en)
Inventor
John R Sibley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joy Manufacturing Co
Original Assignee
Joy Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joy Manufacturing Co filed Critical Joy Manufacturing Co
Priority to US681007A priority Critical patent/US3175709A/en
Priority claimed from US740829A external-priority patent/US2970664A/en
Priority to GB26609/58A priority patent/GB894065A/en
Priority to DEI15317A priority patent/DE1202239B/de
Priority to FR1210099D priority patent/FR1210099A/fr
Priority to GB17098/59A priority patent/GB908520A/en
Priority to FR796333A priority patent/FR1226206A/fr
Application granted granted Critical
Publication of US3175709A publication Critical patent/US3175709A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
    • G05D23/303—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/02—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element
    • B60P1/025—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element with a loading platform inside the wheels of a same axle and being lowerable below the axle
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B17/00—Storing of textile materials in association with the treatment of the materials by liquids, gases or vapours
    • D06B17/02—Storing of textile materials in association with the treatment of the materials by liquids, gases or vapours in superimposed, i.e. stack-packed, form; J-boxes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/02—Transport of mined mineral in galleries
    • E21F13/025—Shuttle cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
    • B60G2204/83—Type of interconnection
    • B60G2204/8302—Mechanical
    • B60G2204/83022—Mechanical using cables, wires, belts or chains

Definitions

  • This invention relates to material haulage vehicles and more particularly to improvements in suspension means for low height mine haulage vehicles of the type commonly known as shuttle cars used for hauling loose material in underground trackless mines.
  • Shuttle cars frequently have to carry heavy loads through low height closely confining mine passages with rough uneven floors. If all the car supporting wheels are rigidly mounted, heavy twisting torsional stresses are imparted to the shuttle car frame, especially ywhen Ia full load is being carried over rough uneven mine iloors.
  • Another object is to provide an improved suspension for steering wheels at a car end with a flexible chain or cable means extending from articulating parallelogram steering wheel frame mounting means, at one side of the car transversely across to similar wheel mounting means at the other side of the Vehicle, and which equalizes weight of the vehicle in substantially a balanced ratio on the said steering wheels.
  • a further object is to provide the equivalent of a threepoint suspension for shuttle cars.
  • Another object is to minimize, balance and distribute stresses imparted to a shuttle car by supporting wheels.
  • a further object is to provide an improved steering wheel suspension means which saves space to thereby provide for lower shuttle cars with more ground clearance and increased capacity.
  • Another object is to provide suspension means for maintainingthe axis of steering wheel kingpins substantially parallel throughout the range of up and down motion of the steering wheels.
  • a further object is to provide improved suspension means which prevents interference between tires and the upper car body, and minimizes interference with conveyor means and/ or elimination of conveyor deck structural interruptions.
  • a still further object is to provide improved means for adjustment of wheel height in my improved steering wheel load balancing suspension.
  • FIG. 1 is a top plan view showing an articulated shuttle car supported by traction driving wheels at the middle and steering wheels at each end which utilize my improved suspension means.
  • FIG. 2 is a side elevation of the shuttle car of FIG. 1.
  • FIG. 3 is an enlarged cross sectional view taken substantially along line 3 3 of FIG. 1, showing the preferred embodment of my improved steering wheel suspension means.
  • FIG. 4 is a cross sectional view also taken along line 3 3, similar to FIG. 3, showing the steering wheels and my improved suspension means of a car end articulated by an uneven mine floor.
  • FIG. 5 is an enlarged cross sectional view similar to FIG. 3 and lalso taken substantially along line 3 3 of FIG. l, showing anotherembodiment of my improved shuttle car steering wheel suspension means.
  • FIG. 6 is a cross sectional view taken substantially along line 6 6 of FIG. 3, showing steering wheel parallelogram linkage mounting means detail.
  • FIG. 7 is a cross sectional view taken substantially along line 7 7 of FIG. 3, showing steering wheel suspension detail.
  • FIG. 8 is a partial enlarged cross sectional view similar to FIGS. 3 and 5 taken along *line 3 3 of FIG. l at one side of the car showing another embodiment of my improved steering wheel suspension means.
  • the shuttle car 10 of FIGS. 1 and 2 used to illustrate the improved suspension means, is a six-wheeler with center drive wheels 12, and with steering wheels 14 at each end of the car, it should be borne in mind that my improved suspension means could be used for steering wheels 14 at an end of a rigid frame four-wheeler shuttle car or with steering wheels of other type vehicles.
  • ri ⁇ he shuttle car 10 of FIGS. 1 and 2 comprises a material carrying body 16 divided into two relatively articulating body sections 18 and 20 hinged together by hinged articulating pivot means 22, as disclosed in the Russell application, extending transversely across in the center region of the car 10.
  • Said relatively articulating body sections 18 and 20 have chambers 24 and 26 respectively which cooperate to provide a material receiving compartment, or bin 28, extending lengthwise of the vehicle.
  • Endless conveyor means 30, with scraper flights 32 extends along the compartment bottom or deck 34.
  • the compartment bottom deck 34 is provided with a conveyor return chamber 36 in a customary manner.
  • endless flight conveyor it will be evident that various other conventional forms of conveyors may be employed.
  • Non-steering traction wheels 12 are rigidly mounted to the sides of body section 20 and each traction wheel 12 is provided with its own positive driving means 38, including a drive chain 40, from a respective electric drive motor 42 mounted to the respective side of the shuttle car body section 20.
  • the shuttle car 10 is provided with steering control 44 within an operators compartment 45.
  • Articulating pivot means 22 permits car body sections 18 and 20 to articulate relative one to the other so that end steering wheels 14 and the traction wheels 12 conform to the mine floor.
  • body sections 18 and 20 are equipped with structural body reinforcing and chanening spacing chambers 46 between the compartment bottom, or deck 34, and the conveyor return chamber 36.
  • Each stitlening spacing chamber 46 extends substantially the length of the respective body sections 18 and 20.
  • the steering wheel suspension means embodiment of FIGS. 3 and 4 within the limits of travel upwards and downwards of the steering wheels 14, equalizes vehicle weight in substantially a balancing ratio on the steering wheels 14 from side to side at the respective vehicle end.
  • the kingpin 50 of each end steering wheel 14 is mounted in a kingpin housing 52 which is mounted for vertical up and down movement by parallelogram upper 54 and lower 56 linkage members.
  • Steering arms 51 of respective steering wheel 14 kingpin yokes 53 are pivotally connected to respective conventional type steering linkage means 55.
  • the lower parallelogram linkage member 56 is pivotally mounted at 53 to a frame member 60 for articulating movement in a vertical plane perpendicular to the side of the shuttle car Iii.
  • Upper parallelogram member 54 is likewise pivotally mounted at 62 to the frame member 60.
  • Parallelogram linkage members S4 and 56 are pivotally hinged at their outer ends at the bottom 64 and at the top 66 respectively of the kingpin housing 52.
  • Each upper parallelogram member 54 is provided with a stop contact surface 68 which comes into abutment with a stop surface 70 on a chain guide bracket 72 to limit downward travel of the respective steering wheel 14.
  • Chain guide brackets 72 one of which is mounted on the shuttle car for each steering wheel 14, have chain guiding arcuate surfaces 74.
  • This provides a suspension chain means 76 which absorbs and counteracts the upward thrust transmitted to steering wheels 14, transmits this force across, and moves to maintain a dynamic balance between the two steering wheels 14 to which it is connected at the respective end of the shuttle car 10.
  • This then, in eliect, is one-point support for each end of the shuttle car 10 which gives, in turn, effectively three-point suspension (modified only asl explained below) for body section 20 from this improved steering wheel 14 suspension of body section 20 and through both traction wheels 12 and, in effect, threepoint suspension (modified only as explained below) for body section 18 by the steering wheel 14 suspension of the body section 18 and through the articulating pivot means 22 of the shuttle car 1i) to both traction wheels 12.
  • This three-point suspension effect for body sections 13 and 2t)l is modified only by one body section tending to twist to a different degree with respect to or in the opposite direction from the other body section, when the suspension chain means 76 of one has, or both have, reached the limit of travel, one side or the other, with the tendency of one body section to twist counteracting the tendency of the other to twist through the common articulating hinge pivot means 22.
  • the side tilt of the whole shuttle car would be determined by traction wheels 12 with suspension chain means 76 moving steering wheels 14 at each end of the car in dynamic balance for such side tilt.
  • I might add that a fourwheeler shuttle car or other vehicle using my improved steering Wheel suspension means at one end of the vehicle and rigidly mounting traction wheels at the other end has effectively three-point suspension at all times.
  • Suspension chain means 76 may be split into two chain subsections 82 joined together by chain load equalizing bars 84 within guiding chamber 80.
  • Guide means S6 which guide the chain and load equalizing bars within guiding chamber 80 are provided on the shank of the connecting means 88 between the equalizing bars 84 and the respective chain sections S2.
  • Equalizing bars 84 are adjustably connected together by capstan type internally threaded adjusting means or turnbuckle 9G. Opening 92 is provided in guiding chamber 80 for access with tools to connecting and adjusting means or turnbuckle 90. Adjustment of equalizing bars 84 by capstan type internally threaded means or turnbuckle 90 is effective to raise or lower the steering wheels 14 as desired.
  • each chain guiding arcuate surface 74 guides and directs the suspension chain means 76 from its pivotal end connection with an arm 78 of the upper parallelogram linkage member 54 to a suspension chain means 76 guiding chamber 93.
  • the guiding chamber 93 is mounted transversely across the vehicle through a stifening spacing chamber 46 between the compartment bottom or deck 34 and the conveyor return chamber 36, instead of there being a guiding chamber 80 across the bottom of a body section as in the embodiment of FIGS. 3 and 4.
  • Suspension chain means 76 of this embodiment is a continuous chain from its 4i pivotal end connection with one arm 78 to its pivotal end connection with the other arm 78 of respective upper parallelogram linkage members 54.
  • the adjustable means for this embodiment is provided at one of the pivotal end connections with a modified arm 78', and comprises a pivot headed 94 stud 96, and nut means 98 positioned through arm opening of the respective arm 78' and upper parallelogram linkage member 54. Adjustments of nut means 98 on stud 96 are elective to raise or lower wheels 14, as desired.
  • FIG. 8 has an arcuate guide member 102 which is an integral part of upper parallelogram linkage member 54.
  • Arcuate member 1122 which moves with upper parallelogram linkage member 54 and with the suspension chain means 76, guides the suspension chain means 76 for alignment with suspension chain means guiding chamber 93 mounted transversely across the vehicle, as shown in the embodiment of FiG. 5.
  • Arcuate member 102 is provided with a stop surface 68' which comes into contact with abutment 70 which is integral with frame member 60 to limit downward travel of the respective steering wheel 14 and through said suspension chain means 76 upward movement of the steering wheel 14 at the opposite side of Vthe vehicle.
  • FIG. 8 provides a suspension chain means 76 which absorbs and counteracts the upward thrust transmitted to steering wheels 14, transmits this force across, and moves to maintain a dynamic balance between the two steering wheels 14 to which it is connected at the respective end yof the shuttle car 10.
  • arcuate member 102 would guide suspension chain means 76 for alignment with a suspension chain means guiding chamber Si) mounted transversely across the vehicle as in the embodiment of FIG. 3.
  • Adjustment means such as illustrated for the 'embodiments of FIGS. 3 and 5, could be adapted for use with respective forms of the steering wheel suspension embodiment of FIG. 8.
  • arcuate guide :member 1412 would be an integral part of lower parallelogram linkage member 56 at each steering wheel 14.
  • conveying means mounted in said body for movement thereon for loading and unloading material therefrom, said body having at least a pair of steerable wheels at one end thereof for steering said body, reciprocable means operatively connecting said steerable wheels tor coordinated movement in equal amounts and in opposite directions.
  • a mobile vehicle comprising, an elongated body with laterally spaced sides, a plurality of rotatable Wheels for supporting said body with at least two of said wheels being located adjacent said sides respectively, respective mounting means consisting of freely pivotable interconnected rigid members connecting said two wheels to said sides for limiting the movement of said two wheels other than rotative in substantially vertical directions with respect to said body, and bodily reciprocable means consisting of an unyieldable connection between said respective mounting means to ensure that said limited movement be in ⁇ opposite directions.
  • a mobile vehicle comprising, an elongated body with laterally spaced sides, a plurality of rotatable wheels for supporting said body with at least two of said wheels being located adjacent said sides respectively, respective mounting means consisting of freely pivotable interconnected rigid members connecting said two wheels to said sides for limiting the movement of said two wheels other than rotative in substantially vertical directions with respect to said body, and bodily reciprocable means consisting or yan elongated transversely flexible and longitudinally unyieldable yconnection between said respective mounting means to ensure that said limited movement be in opposite directions.
  • a mobile vehicle comprising, an elongated body with laterally spaced sides, a plurality of rotatable wheels for supporting Ysaid body with at least two of said Wheels being located adjacent said sides respectively, respective mounting means Consisting of freely pivotable interconnected rigid members connecting said two wheels to said sides for limiting the movement of said two wheels lother than rotative in substantially vertical directions with respect to said body, -and bodily re'ciprocable means consisting of an unyieldable connection between said respective mounting means to ensure that said limited movement be in opposite directions, ⁇ and said bodily reciprocable means being adjustable in length to vary the vertical location of said wheels relative to said body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Framework For Endless Conveyors (AREA)
  • Handcart (AREA)
US681007A 1957-08-29 1957-08-29 Cross equalizing suspension for shuttle car wheels Expired - Lifetime US3175709A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US681007A US3175709A (en) 1957-08-29 1957-08-29 Cross equalizing suspension for shuttle car wheels
GB26609/58A GB894065A (en) 1957-08-29 1958-08-19 Cross equalizing suspension for shuttle car wheels
DEI15317A DE1202239B (de) 1957-08-29 1958-08-28 Grubentransportfahrzeug
FR1210099D FR1210099A (fr) 1957-08-29 1958-08-29 Suspension pour roues de véhicules destinés en particulier au roulage dans les mines
GB17098/59A GB908520A (en) 1957-08-29 1959-05-20 Mine haulage vehicle
FR796333A FR1226206A (fr) 1957-08-29 1959-06-02 Berline de roulage dans les mines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US681007A US3175709A (en) 1957-08-29 1957-08-29 Cross equalizing suspension for shuttle car wheels
US740829A US2970664A (en) 1958-06-09 1958-06-09 Mine haulage vehicle

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US3175709A true US3175709A (en) 1965-03-30

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US681007A Expired - Lifetime US3175709A (en) 1957-08-29 1957-08-29 Cross equalizing suspension for shuttle car wheels

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US (1) US3175709A (fr)
DE (1) DE1202239B (fr)
FR (2) FR1210099A (fr)
GB (2) GB894065A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302739A (en) * 1963-11-19 1967-02-07 Goodman Mfg Co Shuttle cars with six driven wheels
US3827721A (en) * 1973-04-04 1974-08-06 A Coval Articulated haulage vehicle
US3827720A (en) * 1973-04-04 1974-08-06 A Lee Articulated haulage vehicle
US3865206A (en) * 1973-04-04 1975-02-11 Fmc Corp Articulated haulage vehicle
US3874698A (en) * 1973-04-04 1975-04-01 Fmc Corp Articulated haulage vehicle
US4534575A (en) * 1982-10-18 1985-08-13 Jlg Industries, Inc. Vehicle suspension and steerage system
CN101734103B (zh) * 2008-11-17 2011-11-09 沈荣澍 免维护矿车轮对

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8608426A1 (es) * 1984-06-26 1986-07-16 Matra Werke Gmbh Vehiculo multieje con un chasis poco tendente a torsion

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US910491A (en) * 1908-01-18 1909-01-26 Raymond Bonnevie Compensating elastic suspension device for vehicles.
US1427240A (en) * 1921-01-11 1922-08-29 John Fifield Adye Spring suspension of vehicles
US1631103A (en) * 1925-07-31 1927-05-31 C L Brown Automobile suspension
US2414286A (en) * 1944-09-13 1947-01-14 Hyster Co Vehicle wheel mounting
US2448224A (en) * 1946-03-20 1948-08-31 John J Low Spring suspension for vehicles
FR961597A (fr) * 1950-06-15
US2536769A (en) * 1946-10-24 1951-01-02 Austin Motor Co Ltd Spring suspension of motor vehicles
US2602518A (en) * 1945-06-04 1952-07-08 Goodman Mfg Co Driven dirigible wheel mounting for coal mine haulage vehicles
FR1038425A (fr) * 1951-06-15 1953-09-28 Acieries Du Nord Dispositif de liaison entre les bâtis de chenilles de véhicules à chenilles
DE756117C (de) * 1932-09-17 1954-01-18 Habil Herbert Maruhn Dr Ing Abfederung fuer Kraftfahrzeuge
US2705647A (en) * 1953-08-12 1955-04-05 Goodman Mfg Co Shuttle car shock absorber
US2770377A (en) * 1954-03-26 1956-11-13 Goodman Mfg Co Suspension for vehicles such as shuttle cars
US2962176A (en) * 1957-08-29 1960-11-29 Joy Mfg Co Low height shuttle car

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE499668A (fr) *
DE655413C (de) * 1933-09-01 1938-01-15 Daimler Benz Akt Ges Abfederung, insbesondere fuer Kraftfahrzeuge
BE498024A (fr) * 1949-03-31
US2770453A (en) * 1952-09-09 1956-11-13 Chrysler Corp Automotive vehicle stabilizing means
US2741475A (en) * 1953-10-21 1956-04-10 Roehrig John Vehicle stabilizer and helper spring

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961597A (fr) * 1950-06-15
US910491A (en) * 1908-01-18 1909-01-26 Raymond Bonnevie Compensating elastic suspension device for vehicles.
US1427240A (en) * 1921-01-11 1922-08-29 John Fifield Adye Spring suspension of vehicles
US1631103A (en) * 1925-07-31 1927-05-31 C L Brown Automobile suspension
DE756117C (de) * 1932-09-17 1954-01-18 Habil Herbert Maruhn Dr Ing Abfederung fuer Kraftfahrzeuge
US2414286A (en) * 1944-09-13 1947-01-14 Hyster Co Vehicle wheel mounting
US2602518A (en) * 1945-06-04 1952-07-08 Goodman Mfg Co Driven dirigible wheel mounting for coal mine haulage vehicles
US2448224A (en) * 1946-03-20 1948-08-31 John J Low Spring suspension for vehicles
US2536769A (en) * 1946-10-24 1951-01-02 Austin Motor Co Ltd Spring suspension of motor vehicles
FR1038425A (fr) * 1951-06-15 1953-09-28 Acieries Du Nord Dispositif de liaison entre les bâtis de chenilles de véhicules à chenilles
US2705647A (en) * 1953-08-12 1955-04-05 Goodman Mfg Co Shuttle car shock absorber
US2770377A (en) * 1954-03-26 1956-11-13 Goodman Mfg Co Suspension for vehicles such as shuttle cars
US2962176A (en) * 1957-08-29 1960-11-29 Joy Mfg Co Low height shuttle car

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302739A (en) * 1963-11-19 1967-02-07 Goodman Mfg Co Shuttle cars with six driven wheels
US3827721A (en) * 1973-04-04 1974-08-06 A Coval Articulated haulage vehicle
US3827720A (en) * 1973-04-04 1974-08-06 A Lee Articulated haulage vehicle
US3865206A (en) * 1973-04-04 1975-02-11 Fmc Corp Articulated haulage vehicle
US3874698A (en) * 1973-04-04 1975-04-01 Fmc Corp Articulated haulage vehicle
US4534575A (en) * 1982-10-18 1985-08-13 Jlg Industries, Inc. Vehicle suspension and steerage system
CN101734103B (zh) * 2008-11-17 2011-11-09 沈荣澍 免维护矿车轮对

Also Published As

Publication number Publication date
DE1202239B (de) 1965-10-07
GB908520A (en) 1962-10-17
GB894065A (en) 1962-04-18
FR1210099A (fr) 1960-03-07
FR1226206A (fr) 1960-07-08

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